Abstract
We give a review of recent advances in the theoretical description of ultrasmall tunnel junctions, i.e. weakly coupled normal metals and superconductors, at very low temperatures. The description, which is based on the microscopic theory, accounts for the quantum effects associated with Cooper pair tunncling, and for the disspation due to single electron tunneling (SET) or normal current flow. The former is described by the familiar periodic potential which, in the quantum regime, leads to energy bands, and to coherent Bloch oscillations in response to an external current. The stochastic SET, which may be blocked by the Coulomb interaction, yields voltage oscillations even in normal junctions, and also modifies the Bloch oscillations in Josephson junctions. The theory is extended to networks and granular superconducting films as well.
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© 1989 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
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Eckern, U., Schön, G. (1989). Charge transfer between weakly coupled normal metals and superconductors at low temperatures. In: Rössler, U. (eds) Festkörperprobleme 29. Advances in Solid State Physics, vol 29. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0108004
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DOI: https://doi.org/10.1007/BFb0108004
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